Mary was born in 1877. She is the daughter of Thomas Mitchell.
Sources
"England and Wales Census, 1911," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:X7L7-66M : 1 July 2019), Thomas Mitchell, Watford Urban, Watford, Hertfordshire, England; from "1911 England and Wales census," database and images, findmypast (http://www.findmypast.com : n.d.); citing PRO RG 14, The National Archives of the UK, Kew, Surrey.
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